Mystery oil leak |
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Mystery oil leak |
Mayne |
Mar 12 2017, 09:40 PM
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#1
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Member Group: Members Posts: 254 Joined: 28-February 17 From: NM Member No.: 20,880 Region Association: None |
Hi everyone, I picked up a 75 914 last summer and have finally gotten it running well enough to drive (which I want to do!). The problem is, a substantial oil leak that I thought I'd fixed is still there. Previously, it would spray oil from the lower drivers side at revs above idle. Not finding a clear source, I dropped the motor and resealed the oil pump, which really seemed like the issue. Motor back in now and the leak is the same. It seems to rev or crankcase pressure related, but now I'm thinking pushrod tubes or valve cover gasket. Any thoughts would be much appreciated.
I'll give a proper introduction with some photos soon. Cheers! |
porschetub |
Mar 13 2017, 11:37 AM
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#2
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Advanced Member Group: Members Posts: 4,703 Joined: 25-July 15 From: New Zealand Member No.: 18,995 Region Association: None |
Nice original looking car (IMG:style_emoticons/default/beer.gif) ,I'am presuming you have a hose going from the breather to the carb and that your oil pressure switch has a wire for it.
Before you pull the engine again clean it down with brakeclean (or similar) then run it again without driving it after placing a piece of white cardboard below the engine. I was chasing leaks under my "6'' and found this a good method,have done the same with my T4 and other less notable cars (IMG:style_emoticons/default/biggrin.gif) . Pushrod tube seals are the most likely culprits along with the rocker cover gaskets,I used hydraulic grade''o'' rings on the tubes and a good non-hardening sealer,i have always sealed my gaskets to the rocker covers as well( but not to the head of course ),as mentioned there are plenty of other places that can leak. Oh and by the way (IMG:style_emoticons/default/welcome.png) |
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